* {
  padding: 0;
  margin: 0;
  font-family: "Alibaba Sans", sans-serif;
}

body {
  font-size: 14px;
}

h3 {
  font-size: 22px;
}

/* 通栏宽度 */
.common {
  width: 1120px;
  margin: 0 auto;
}

/* 通用按钮 */
.btn {
  display: inline-block;
  color: #fff;
  font-size: 14px;
  padding: 8px 16px;
  cursor: pointer;
}

/* 白色按钮 */
.btn-white {
  border: 2px solid #fff;
  background-color: transparent;
}

.btn-white:hover {
  background-color: white;
  color: #000;
  transition: all 0.3s ease-in-out;
}

/* 底部(橙色)按钮 */
.btn-bottom {
  background-color: #ff8b38;
  border-radius: 3px;
  box-shadow: 0 0 5px #aaa;
}

.btn-bottom:hover {
  background-color: #ff6a00;
  transition: all 0.2s ease-in-out;
}

/* 40px titles */
.titles {
  font-size: 40px;
  line-height: 40px;
  display: block;
  font-weight: 200;
}

/* 线条 */
.line {
  width: 80px;
  height: 2px;
  background-color: #fff;
  margin: 40px 0;
  display: inline-block;
}

/* input */
.input {
  display: block;
  outline: none;
  border: none;
  border-bottom: 1px solid #bdbdbd;
  padding-left: 10px;
}

/*
颜色 
 */
/* 白色 */
.white {
  color: #fff;
}

/* 灰色 */
.grey {
  color: #86878b;
}

/* 橙色 */
.orange {
  color: #ff8b38;
}

.orange-bg {
  background-color: #ff8b38;
}

/* 暗色 */
.dark {
  color: #212121;
}
